基于线型物体的主方向关系模型的研究

在区域物体最小边界矩形MBR（Minimum Bounding Rectangle）理论的基础上,对线型物体主方向空间关系模型进行了研究,提出了将线型物体主方向关系转化为MBR关系的方法,以促进应用MBR相关运算法则和定理进行线型物体的空间方向关系的研究.对于特殊位置的线型物体,分析了基于投影的主方向模型及其特性,研究了对特殊位置线型物体利用投影方法进行的主方向关系合成运算,以便于对线型物体空间方向关系推理的进一步研究.

A model for cardinal direction relations based on linetype objects

Based on the theory of area object MBR (Minimum Bounding Rectangle), the model of cardinal direction relationswith linetype objects is studied. Furthermore, the method of translating cardinal direction relations of linetype objects to MBR re-lations is put forward, so as to promote applying the principle and theory of MBR to the study of cardinal direction relations oflinetype objects. As to linetype objects with special positions, cardinal directions model based on projection and its characteristicare analyzed. Moreover, the compounding operation of cardinal direction relations by means of projection is studied, so as to beconvenient for the farther study of linetype objects' space direction relations reasoning.